40066003 has 4 divisors (see below), whose sum is σ = 42174760. Its totient is φ = 37957248.

The previous prime is 40066001. The next prime is 40066007. The reversal of 40066003 is 30066004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40066003 - 2¹ = 40066001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 2108737 = 40066003 / (4 + 0 + 0 + 6 + 6 + 0 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40066001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054350 + ... + 1054387.

It is an arithmetic number, because the mean of its divisors is an integer number (10543690).

Almost surely, 2^40066003 is an apocalyptic number.

40066003 is a deficient number, since it is larger than the sum of its proper divisors (2108757).

40066003 is a wasteful number, since it uses less digits than its factorization.

40066003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108756.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 40066003 is about 6329.7711649000. The cubic root of 40066003 is about 342.1831918711.

Subtracting from 40066003 its reverse (30066004), we obtain a palindrome (9999999).

The spelling of 40066003 in words is "forty million, sixty-six thousand, three".